Picture synchronization circuit and method therefor

Details Picture synchronization circuit and method therefor Picture synchronization circuit and method therefor

1997-09-05

2000-02-22

Lee, Michael H.

Television

Miscellaneous

348845, 348512, H04N 9475

Patent

active

060286482

ABSTRACT:
In a picture synchronization circuit, a decoding time stamp value of an input picture is compared with a system time clock count value at the moment a picture is input. When the decoding time stamp value is larger than the system time clock count value, and when a difference between the decoding time stamp value and the system time clock count value is larger than a predetermined threshold value, decoding of the input picture is delayed by an amount of time corresponding to the difference. When the decoding time stamp value is smaller than the system time clock count value, and when the difference between the decoding time stamp value and the system time clock count value is larger than a predetermined threshold value, the input picture is skipped without decoding. Therefore, the correct time of output of the decoded picture is restored.

REFERENCES:
patent: 5771075 (1998-06-01), Rim et al.
patent: 5802239 (1998-09-01), Fujinami
patent: 5808722 (1998-09-01), Suzuki
patent: 5815634 (1998-09-01), Daum et al.

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